<?php
    namespace app\admin\model;
    use think\Model;
    use think\request;
    use think\Db;

    
    class Sign extends Model
    {

        public function sign_list(){
            $map =[];
            $request = Request::instance();
            $data = $this->where($map)->order('Sign_id asc')->select();
            return $data;
        }


    }
?>